Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: redirect frintf to a variable
Top Forums Shell Programming and Scripting redirect frintf to a variable Post 302559641 by vgersh99 on Tuesday 27th of September 2011 06:49:38 PM
Old 09-27-2011
Quote:
Originally Posted by robo
this is really simplified but any chance to pass FREEPER and USEDPER to two variables
it's possible:
Code:
free -m > /tmp/foo$$; eval $(awk '/^Mem:/ { f+=$4; u+=$3 } END {t=f+u; printf("FREEPER=%3.2f\nUSEDPER=%3.2f\n", f/t*100, u/t*100)}' /tmp/foo$$); rm /tmp/foo$$; echo $USEDPER

What is it that you're after?
Most likely you don't have to pass the variables back to shell - everything could be down within awk itself...
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

please help: how to redirect input into a variable

I'm trying to write a simple script program (C shell). I have a problem redirecting input into a variable. Say I have a variable called J, and there is file called result which contains just some number, say 5. Which command should I use to assign J value 5 from the file result. I tried the... (2 Replies)
Discussion started by: artur80
2 Replies

2. UNIX for Dummies Questions & Answers

Redirect from Variable to command line??

The following creates a needed awk command from some preexisting variables and stores it in the variable i. I then redirect it to a new file change the permission on the file and run it as a script. How can I do a simple redirect on this variable to the command line, instead of creating a new... (8 Replies)
Discussion started by: ugh
8 Replies

3. UNIX for Dummies Questions & Answers

Redirect Output In Variable

how make assign the output of the command (for example: grep "file" "string" ) in a variable ($name)? i thing how put the result of the command (grep , cut, find ecc) in a variable.. IT's Possible ?? (1 Reply)
Discussion started by: ZINGARO
1 Replies

4. UNIX for Dummies Questions & Answers

Redirect to variable

how do you redirect stdout into a variable. whenever I try I get an ambiguous redirect error :( I am trying to validate some user input and failing miserably. cal $MONTH $YEAR | grep -c "$DAY" if the above is 1 then it is valid if 0 then not valid. I have been trying to redirect the output... (2 Replies)
Discussion started by: MrAd
2 Replies

5. Shell Programming and Scripting

after grep i want to redirect it to some variable

for the below grep -i $1 "${logdir}"* | grep -i adding | grep -iv equation | tail -1 | cut -d ':' -f 1 the result of the grep i want to redirect into some variable, i tried to do veri=grep -i $1 "${logdir}"* | grep -i adding | grep -iv equation | tail -1 | cut -d ':' -f 1 but it is... (2 Replies)
Discussion started by: mail2sant
2 Replies

6. Shell Programming and Scripting

redirect variable to same program at next loop

Hi all, I don't know how to redirect a variable in this case: while true do ./ready_data ... done ready_data should read a file looking for an ID, if this doesn't exist then add the last ID seen into the first line. When ID exists there is no problem, but when ID doesn't... (0 Replies)
Discussion started by: csecnarf
0 Replies

7. Shell Programming and Scripting

redirect cat to variable

hello just i saw a really strange for cat i have file (file1) contains line /home/rajiv/proj1/*.txt now applied a commonds DDPATH="$(cat file1)" echo $DDPATH it shows all the txt files in that folder like /home/rajiv/proj1/read1.txt /home/rajiv/proj1/read2.txt... (7 Replies)
Discussion started by: shailesh_arya
7 Replies

8. UNIX for Dummies Questions & Answers

Redirect Query o/p to variable

Hi, I wanted to o/p the number of rows in a table to a variable in linux. How can i achieve this. I wrote the query and its settings like feedback, pagesize line size in a file and using this file as a parameter to the sqlplus command. now can i redirect the o/p of that query to a variable.... (2 Replies)
Discussion started by: Swapna173
2 Replies

9. UNIX for Dummies Questions & Answers

Redirect to a Variable? Or is it cmd cap?

Hi, Im reading an ANSI text file and greping for a pattern. Then i cut what i dont need from that pattern. So now i just have what i need. What i have now just so happens to be a constant integer. How can i save this integer in a varaible? Or do i use command capture in some form? cat... (2 Replies)
Discussion started by: oxoxo
2 Replies

10. Shell Programming and Scripting

Redirect Variable Value to a File

I have shell script generate.sh that has var="HP-UX" I am following example 19-8 in the below document. Here Documents The output.txt is generated however I want the value of variable var to be reflected in the contents of the output.txt file cat <<'EOF' #!/bin/bash connect("Welcome... (1 Reply)
Discussion started by: mohtashims
1 Replies

LEARN ABOUT DEBIAN

cmannotifyd

cmannotifyd(8)						     CMAN Notification Daemon						    cmannotifyd(8)

NAME

       cmannotifyd - CMAN Notification Daemon

SYNOPSIS

       cmannotifyd [-f] [-d]

DESCRIPTION

       The cmannotifyd daemon talks to CMAN and provides a mechanism to notify external entities about cluster changes.

       CMAN dispatches 3 kind of notifications:

       - CMAN_REASON_TRY_SHUTDOWN when cman requests to all clients if it is allowed to shutdown.

       - CMAN_REASON_STATECHANGE when cman detects a node joining or leaving the cluster.

       - CMAN_REASON_CONFIG_UPDATE when a configuration change event has been detected/requested.

       These notifications are then dispatched to the shell script cman_notify in the environment variable CMAN_NOTIFICATION.

       cman_notify will then execute all the scripts in the configured notification directory (default: /etc/cluster/cman-notify.d) passing a very
       minimal set of envvars including, of course, the CMAN_NOTIFICATION= type.  The execution order is set by the filename as shown by "LC_ALL=C
       ls -las".

       cmannotifyd logs are stored in the default log file (/var/log/cluster/cmannotifyd.log).

       cman_notify  logs are stored in the default log file (/var/log/cluster/cman_notify.log). By default the output from the scripts executed by
       cman_notify is redirected to /dev/null.	Users can either set CMAN_NOTIFICATION_DEBUG=1 in their environment or set proper debug configura-
       tion in cluster.conf to redirect scripts output to the cman_notify log file.

NOTES

       cmannotifyd does not block on cman_notify nor check the exit status of the script.

       Notifications are dispatched in the same order as they arrive, one by one.

       CMAN_REASON_TRY_SHUTDOWN  is  passed  to  scripts  for information only, they can not influence cman's decsion about whether or not to shut
       down.

       CMAN_REASON_STATECHANGE also implies CMAN_NOTIFICATION_QUORUM exported in the environment. CMAN_NOTIFICATION_QUORUM will be set to 1  (when
       the node is part of a quorate cluster) or 0 (otherwise).

       A template for cman_notify scripts can be found in the doc/ directory.

OPTIONS

       -f     Run in the foreground (do not fork / daemonize).

       -d     Enable debug output.

								   November 2008						    cmannotifyd(8)
All times are GMT -4. The time now is 08:57 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy